var util = require('util');
var Component = require('./component.js');

/**
 * 父类的子类
 * @type {[type]}
 */
function ConcreteComponent() {
  Component.call(this);
  this.operation = function() {
    console.info('output by concreteComponent');
  };
}

util.inherits(ConcreteComponent, Component);

module.exports = ConcreteComponent;